2*30
Im not sure but i tried it
        
             
        
        
        
If you would like to solve the equation 3 3/4 * a + 3 + 6 = 87, you can do it using the following steps:
3 3/4 * a + 3 + 6 = 87
15/4 * a = 87 - 3 - 6
15/4 * a = 78    /*4/15
a = 78 * 4/15
a = 104/5
a = 20.8
The correct result is 20.8.
        
             
        
        
        
Answer:
x= 90/4*2x
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
1. add up all of the arcs. 
2x+3x+4x-8+x-12
2. all of the arcs equal 360
2x+3x+4x-8+x-12=360
3. Find x
10x-20=360, x=38
4. angle LTE is equal to half of the sum of the intercepted arcs.
.5(arc LE +GF)
5. plug in LE +GF with x
.5(76+144)
LTE=110
 
        
             
        
        
        
Answer:
dirk =13.25 hours
charlie =11 75 hours
Step-by-step explanation:
c+d=25------(1)
d-1.5=c-----(2)
from (1), 
c+d=25
c=25-d-----(3)
substitude (3) into (2)
d-1.5=c
d-1.5=25-d
2d=26.5
d=13.25
 if d=13.25 hours
 c+d=25
c+13.25=25
c=25-13.25
c=11.75